/*
 * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#include <assert.h>
#include <debug.h>
#include <mmio.h>
#include <plat_sip_calls.h>
#include <rockchip_sip_svc.h>
#include <runtime_svc.h>
#include <uuid.h>

/* Rockchip SiP Service UUID */
DEFINE_SVC_UUID(rk_sip_svc_uid,
        0xe86fc7e2, 0x313e, 0x11e6, 0xb7, 0x0d,
        0x8f, 0x88, 0xee, 0x74, 0x7b, 0x72);

#pragma weak rockchip_plat_sip_handler
uint64_t rockchip_plat_sip_handler(uint32_t smc_fid,
                   uint64_t x1,
                   uint64_t x2,
                   uint64_t x3,
                   uint64_t x4,
                   void *cookie,
                   void *handle,
                   uint64_t flags)
{
    ERROR("%s: unhandled SMC (0x%x)\n", __func__, smc_fid);
    SMC_RET1(handle, SMC_UNK);
}

/*
 * This function is responsible for handling all SiP calls from the NS world
 */
uint64_t sip_smc_handler(uint32_t smc_fid,
             uint64_t x1,
             uint64_t x2,
             uint64_t x3,
             uint64_t x4,
             void *cookie,
             void *handle,
             uint64_t flags)
{
    uint32_t ns;

    /* Determine which security state this SMC originated from */
    ns = is_caller_non_secure(flags);
    if (!ns)
        SMC_RET1(handle, SMC_UNK);

    switch (smc_fid) {
    case SIP_SVC_CALL_COUNT:
        /* Return the number of Rockchip SiP Service Calls. */
        SMC_RET1(handle,
             RK_COMMON_SIP_NUM_CALLS + RK_PLAT_SIP_NUM_CALLS);

    case SIP_SVC_UID:
        /* Return UID to the caller */
        SMC_UUID_RET(handle, rk_sip_svc_uid);
        break;

    case SIP_SVC_VERSION:
        /* Return the version of current implementation */
        SMC_RET2(handle, RK_SIP_SVC_VERSION_MAJOR,
            RK_SIP_SVC_VERSION_MINOR);
        break;

    default:
        return rockchip_plat_sip_handler(smc_fid, x1, x2, x3, x4,
            cookie, handle, flags);
    }
}

/* Define a runtime service descriptor for fast SMC calls */
DECLARE_RT_SVC(
    rockchip_sip_svc,
    OEN_SIP_START,
    OEN_SIP_END,
    SMC_TYPE_FAST,
    NULL,
    sip_smc_handler
);
